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Non-concentric increaser 2 diameters - Ø 175 (3-175-104)

National Flues presents the Non-concentric Increaser 2 Diameters - Ø 175, a high-quality stainless steel upgrade essential for modern flue systems. Designed for reliable performance in boilers, ovens, and ventilation systems, this product meets the highest CE and EN 1856-1 standards. Enhance your flue system with this versatile increaser and experience efficiency, safety, and durability in every installation.
£199.92
with free delivery Give us a call if you find it cheaper and we'll try to price match.

 

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At a Glance

    Premium 316L Stainless Steel construction
    High-pressure sealing gasket for secure connections
    Push-fit jointing system with a Locking Band
    Suitable for both positive and negative pressure applications
    Compliant with EN 1856-1 standards and CE marked
    Versatile use in boilers, ovens, ventilation systems, and chimney shafts
    Maintains a safe 50mm distance from combustible materials

Please Note: All dimensions refer to the internal diameter of flues. If unsure, please call 01670 206999 to ensure you choose the correct products.

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Have Questions?
Phone: 01670 206999
Email: [email protected]

The Non-concentric increaser 2 diameters - Ø 175 is a crucial piece of the SWPro modular single wall flue system. Crafted from high-grade 316L stainless steel, this increaser boasts various thickness options based on flue diameter. Its design includes a high-pressure sealing gasket, making it suitable for both positive and negative pressure applications, as well as high and low temperatures, including condensing and non-condensing environments.

Ideal for boilers, ovens, ventilation systems, and chimney shafts, the SWPro system is versatile and efficient. This increaser ensures a secure fit with a push-fit jointing system complemented by a Locking Band. For P1 and H1 installations, jointing gaskets are essential.

It's important to maintain a 50mm distance from any combustible materials like wood or plasterboard. With CE marking and adherence to EN 1856-1 standards, this product ensures safety and reliability for a wide range of applications.

SKU: 3-175-104

Technical Specifications
ModelNon-concentric Increaser 2 Diameters - u00d8 175
SKU3-175-104
Material316L Stainless Steel (Inner)
ApprovalsCE Marking, EN 1856-1
Pressure ApplicationsSuitable for both positive and negative pressures
Temperature RangeHigh and low temperatures, including condensing and non-condensing
Jointing MethodPush-fit joint with Locking Band; Jointing gaskets required for P1/H1 installations
Combustible ClearanceMinimum 50mm from the flue exterior
CertificationsEN 1856-1, CE
For safe and efficient installation, ensure the flue system maintains the recommended clearance of 50mm from any combustible materials such as wood or plasterboard. The Non-concentric Increaser is designed for push-fit jointing with a Locking Band; however, for all P1 and H1 installations, you must fit jointing gaskets at every connection to ensure a secure and leak-proof setup. Always adhere to the installation guidelines provided in the manual and consult a professional installer if unsure about any specific requirements. This product is ideal for inclined flue runs where diameter transitions are needed, and care should be taken during installation to ensure proper alignment and seal integrity.

This increaser is used to efficiently change duct sizes in a flue system, preventing condensate pooling, especially in inclined runs.

It is made of high-grade 316L stainless steel, ensuring durability and performance.

Yes, it is CE marked and conforms to EN 1856-1 standards.

Yes, it's designed for both positive and negative pressure applications, making it very versatile.

Jointing gaskets must be fitted on every joint in P1 and H1 installations for secure connection.

A distance of 50mm from the outside of the flue to any combustible material like wood or plasterboard is recommended.

The SWPro system is suitable for boilers, ovens, ventilation systems, and as a chimney shaft liner.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Thursday, May 8th. Delivery times of products not in our warehouses depend on product availability and shipping. If you need a definitive delivery time give us a call. If you need faster stove or fireplace delivery please also give us a call. We can sometimes reduce longer lead times if we pay the carrier £25 for express delivery. Visit our Shipping Information page for more information.

Warranty & Returns +

All our products come with warranties. Mi-Flex offers a lifetime guarantee. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.

Price Match Guarantee +

We will match any price like for like on a retail basis. Give us a call if you find it cheaper and want to buy from us.

Read our review in our Non-concentric increaser 2 diameters - Ø 175 buyers guide

Secure superior performance and safety – add the Non-concentric Increaser 2 Diameters to your order today!

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